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No. 748,645. PATENTED JAN. 5, 1904. H. PARKER.

PAPER MAKING MACHINERY.

APPLIOATION FILED JUNE '7, 19(11.

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APPLIUATIGN FILED JUNE 7, 1901.

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No. 748,645. PATENTED JAN. 5-, 1904.

H. PARKER. PAPER MAKING MACHINERY.

APPLIuATm-n FILED JUNE 7 1901.

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H. PARKER. PAPER MAKING MACHINERY.

APPLICATION FILED JUNE 7, 1901.

4 SHEETSSHEET 4 H0 MODEL.

Patented January 5, 1904.

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UN T D STATES PATENT HOWARD PARKER, OF BELLOWS FALLS, VERMONT, ASSIGNOR TO IMPROVED PAPER MACHINERY COMPANY, OF OASTINE, MAINE, AND NASHUA, NEW HAMPSHIRE, A CORPORATION OF MAINE.

PAPER=MAKING MACHINERY.

SPEGIFIGATION forming part of Letters Patent No. 748,645, dated. January 5, 1904. Application filed June 7,1901. Serial No. cases. on model.)

To aZZ whom it may concern: collecting the pulp into a more or less com- Beit known that I, HOW'ARD PARKER, a citipact sheet. The suction apparatus is conzen of the United States of America, and a nected with this roll to partially extract resident of Bellows Falls, county of Windmoisture and water from the pulp, as indi- 5 ham, and State of Vermont, have invented cated by thearrows in Fig. 2. Adjacent to certain new and useful Improvements in Pathe part of the roll which is subjected to this per-Making Machinery, of which the followsuctionaction are located rolls (1 in adjustingisaspecification,wherebyanyone skilled able bearings.- Beyond these rolls (1 dd is in the art may make and use the same. located a second suction-roll F. An endless 10 Figure 1 is a side view'of an embodiment felt G passes over the idler g between the 1 of my'invention. Fig. 2 .is a side elevation roll B and the rolls 0 C, over the idlers g g in substantially a central vertical section of g 9 between the rolls d and the suction-roll the same. Fig. 3 is a front elevation, partly E, and around the suction-roll F. As the in section. Figs. 4 and 5 are detail views particles of pulp are collected into asheet I5 illustrating the manner of inserting new felt on the periphery of the roll E a considerable into the machine. Fig. 6 is a detail view part of the moisture in the pulp is extracted showing the action of the upper roll when by the suction action on this roll. The small the paper-pulp is being taken from it. Figs. rolls d d (1 press the felt onto the pulp, and 7 and 8 are detail views,'Fig. 7 showing the as the felt passes around the roll F it car- 20 pulp on the roll and Fig. 8 the pulp as it is rice with it the pulp, and the opposite side being stripped from the roll. of the sheet of pulp is subjected to the suc- In the art of paper-making raw material tion action of the roll F. The layer of pulp or stuff is out up into finely-divided particles H (indicated by dotted lines in Fig. 2) is and is generally mixed with a large quantity carried with the felt over the idler g and 25 of water, so that this pulp, which is verybuoybetween the rolls B and G O. The roll B ant, is held in suspension in the water. It is is pressed into the rolls 0 C by hydraulic collected into a sheet sometimes on the rolls, pressure exerted upon a piston in the cylinwhich revolve in the solution, and sometimes ders I I and picks up the pulp carried by the on the forming-screens or Fourdrinier wires. felt. The empty felt passes about the roller 0 It is often desirable to store or ship the pulp C, idlers g g g 9 and again takes on a v after it has been formed into a sheet and ice sheet of pulp as it passes between the first of fore it has been subjected to the final operathe rolls (1 and the suction-roll E. The sheet tions. of pulp which is carried from the suction- My invention has for its object to collect roll on the felt to the roll B is quite thin and 35 the particles of pulp from the liquid in which is collected in several layers on the roll B,

it is suspended, to thoroughly dry it, and where it is compacted by the pressure of this form it into compact sheets. roll on the rolls 0 0. When a sufficient I have shown in the drawings and will here thickness of pulp is gathered on the roll B, in describe a preferred form ofemb odiment the pulp is out along the length of the roll, 40 of my invention. as indicated in Fig. 8, and the lower edge of A A denote the columns of the machine, in 'the sheet is pulled away from the roll and go which are located the bearings for the rolls. feeds out of the machine, as shown at K "in B denotes the upper roll, on which the sheet Fig. 6. The felt meanwhile continues to deof pulp is formed, carried in the bearings b 1). liver the thin sheet of pulp to the roll B, and as 45 C 0 denote the two lower rolls, which are fast as a thick sheet is stripped from-the roll carried in the bearings c 0'. Adjacent :to a new sheet begins to be collected thereon. 5 these rolls B O C'is located the tank D,'con- It has been demonstrated by practice that if taining the pulp in suspension. In this tank the bearings of the roll B are stationary the is revolubly mounted a suitable roll E for felt is subjected to a very great strainafter the end of the thick sheet of pulp has passed between the rolls B and O and before it has passed from between the rolls B O and the felt is very quickly damaged or torn, so that it must be replaced. These felts are quite expensive, and the time consumed in replacing them occasions a considerable loss.

I have devised a means of permitting the roll B to swing or tip onto the roll 0 after the thick sheet of pulp has passed from between the rolls B and O and the felt is thus relieved from the excessive strain to which it would be subjected between the roll B and the second roll 0. In the drawings, 1) b denote the bearings for the roll B. They are grooved to slide on the guides N N. The

bottom of the groove on the left-hand side? norm ally bears against and slides on the guide N, while between the bot-tom of the groove on the right-hand side and the guide N there is left a clearance, as clearly shown in Fig. 1, to permit the bearings b b to move to the right. A plate 0 is secured to the piston-rod of the piston in the cylinder I. Between this plate and the top of the bearings are a series of rolls 0 to permit of a free movement of the bearingsb b with respectto the plate 0. The bearings and the plate are secured together by the straps m. By reference to Fig. 6 the action of the roll B will be clearly understood. As soon as the end of the sheet of pulp K passes from between the rolls B G the roll B is immediately thrown to the right and will occupy the position shown in Fig. 6. As soon as the pulp K passes from between the rolls B and O the roll B will return to its normal position and the operation continue until the sheet of pulp on the roll B is again thick enough to be removed. I have also shown a means for raising the rolls while the endless felt is being put into place. Connected with the cylinder I is the two-way valve P, opening into the top and bottom of the cylinder. When a new felt is to be put into the machine, I first raise the upper roll B by admitting the steam, water, or other operating fluid to the the lower part of the cylinder I. Fig. 4 shows the rolls B thus raised, and G shows one side of the felt which is put in place between the roll B and the rolls 0 O. The roll B is now lowered into place, and the strap Q is placed over the axle of the roll B and under the axles of the rolls 0 O, as shown in Fig. 5. Water, steam, or other fluid is now admitted to the lower part of the cylinder under the piston, and all three of the rolls are raised, the driving-gears R R on the rolls being disengaged from the driving-gear S. The bearing-boxes c c for the rolls 0 O are now removed, and the other side of the endless felt may be put into place underneath therolls O O, as is clearly indicated in Fig. 5. The boxes are then replaced and the rolls lowered into their bearings and the. strap Q removed. It is necessary to exert a considerable pressure on the roll B, and the abovedescribed method of raising the roll B and the rolls 0 G for the purpose of introducing a new felt is a simple and easy way of doing it, by simply reversing the action of the pressure apparatus.

Fig. 7 shows the roll Bwith the thick sheet of pulp, and Fig. 8 shows this pulp after it has been cut lengthwise of the roll and one end stripped from the roll.

I claim as my improvement 1. In a machine of the class specified, in combination the endless felt, a plurality of coacting rolls mounted in suitable bearings in the frame of the machine, one of said rolls being free to move to a limited extent from side to side with respect to the other rolls, substantially as described.

2. In a machine of the class specified, the combination with the frame and an endless felt, of two or more rolls mounted side by side in suitable bearings in the frame, a roll coactingwith the first two rolls and bearings for said roll, free to move to a limited extent from side to side.

3. The combination in a machine of the class specified with the frame and the two rolls mounted side by side in said frame, of a single roll coacting with the first two rolls, bearings for the single roll arranged to slide vertically on guides and free to move to a limited extent from side to side.

4. The combination in a machine of the class specified with the frame, the two rolls mounted side by side in the lower part of the frame, of a single roll coacting with the firstmentioned rolls, bearings for said rolls, a plate connected with the bearings for said roll, rolls located between said plate and said bearings, and means to move said plate vertically, substantially as described.

5. In a machine of the class specified the combination with the frame and the rolls supported in suitable bearings in said frame, of a pulp-tank arranged adjacent to said rolls, a suction-roll mounted in said tank and adapted to form the pulp into a sheet on its periphery, and an endless pulp-carrying felt and adapted to pick off the sheet of pulp therefrom, and a second suction-r011 arranged adjacent to the first suction-roll and adapted to'subject the opposite side of the sheet of pulp to the suction action.

6. In a paper-making machine, the tank, a suction-roll revolnbly mounted in said tank, a second suction-roll mounted adjacent to the first suction-roll, a forming screen or felt passing from one of said rolls to the other, said rolls being arranged to subject each side of the felt and pulp carried thereby to the suction action, substantially as described.

7. In a machine of the class specified, the tank containing the solution, the suction-roll revolnbly mounted therein, a second suctionroll mounted adjacent to the first-named roll, an endless felt passing over part of the periphery of the first roll and in the opposite direction about the other roll, and a series of traveling over the roll mounted in thetank adjustable pressure-rolls arranged adjacent to and coasting with the first suction-roll, as and for thepurposes specified.

8. In a machine of the class specified, the combination with the frame, of two or more rolls mounted side by side in suitable bearings in the frame, a roll coacting with the first two rolls, a felt passing over the two rolls and under the single roll, bearings for said last-named roll,a hydraulic cylinder arranged over each of the bearings of said roll, and the pistons in said cylinder connected with said bearings whereby a direct hydraulic pressure may be brought to bear on said roll, substantially as described.

9. The combination in a machine of the class specified with the frame and the rolls suitably mounted therein, of a hydraulic cylinder mounted over the bearings of one of the rolls, the piston in said cylinder, and connections between said piston and the bearings of one of said rolls, and a removable strap embracing the ends of the axles of each of the rolls, as and for the purposes specified.

10. In a wet-machine, a set of squeezingrolls comprising a top roll and two under rolls, the latter being disposed in parallelism in the same horizontal plane, and the former located in a plane above the latter with its axis approximately midway between them, supports for said top roll movable backv and forth whereby said top roll may move bodily relative to the under rolls, and' means for vertically adjusting said supports.

11. In a wet-machine a set of rolls comprising a top roll and two under rolls, the latter beingdisposed in parallelism in the same horizontal plane, and the former located in a plane above the latter with its axis approximately midway between them, and supports for said top roll free to move back and forth, whereby said top roll may move bodily relative to the under rolls, substantially as described.

12. Ina wet-machine, a set of squeezingrolls comprising a top roll and two under rolls,

' tically on guides and free to move to a limited extent from side to side, a hydraulic cylinder, and means for connecting therewith said movable bearings for the single roll, substantially as described.

HOWARD PARKER.

Witnesses GEo. A. WESTON, BENJAMIN B. WETHERBEE. 

